Draft and buffing gear



April 13, 1937- s. B. HASELTINE 2,076,779

DRAFT AND BUFFING GEAR Filed May 27, 1955 /0 Fig-1 *H2 Patented pr. 13, i937 DRAFT AND BUFFI NG GEAR Stacy B. Haseltine, Glen Ellyn, Ill., 'assigner to W. H. Miner, Inc., Chicago, Ill., a corporation of Delaware Application May 27, 1935, Serial No. 23,655

9 Claims.

This invention relates to improvements i-n draft and bufng gears, especially adapted for use in connection with mine cars.

- One object of the invention is to provide a simple and ecient combined draft and bufng gear which may be economically manufactured.

Another object of the invention is to provide a gear of the character set forth, including a yieldingly resisted buffing member movable in- 10 wardly against the spring resistance means in buff, which buing member is also directly actuated in draft to compress said spring resistance, thereby eliminating the use of the usual additional separate means actuated by the zl5 coupling connection to compress said means in draft.

A further object of the invention is to provide in a mechanism of the character specified in the preceding paragraph, a coupling pin which serves as the sole means for transmitting the draft forces to the builing head to compress said spring means, thereby greatly reducing the number or" parts of the mechanism.

Other objects of the invention will more clearly appear from the description and claims hereinafter following.

In the drawing forming a part of this specification, Figure l is an end elevational View of a mine car, partly broken away, illustrating my improved combined draft and bufng gear in connection therewith, the gear being shown partly in front elevation and partly in vertical section, said vertical section corresponding'substantially to the line I-l of Figure 3. Figure 2 5 is a horizontal sectional view, showing the gear in part plan and part horizontal section, the section thereof corresponding substantially to the line 2 2 of Figure 3. Figure 3 is a vertical sectional view, corresponding substantially to the une 3 3 of Figures 1 and 2. Figure 4 is a View similar to Figure 3 illustrating the movable parts of the mechanism in different positions.

In said drawing, I0 indicates the vertical end wall of a mine car, Il the end sill to which said end wall is riveted, and l2 a bottom plate riveted to the lower flange of said end sill.

My improved draft and bufling gear is mounted on the end of the car and comprises broadly a `support A; a bufng head B; a coupling pin C; and springs D D.

The support A is in the form of a housing comprising a vertical platelike section 23 having forwardlyI projecting, spaced top and bottom flanges 2l and 22 connected by vertical side flanges 23-23. The support A is further provided with a pair of forwardly projecting, spaced horizontal arms 24 and 25, centrally thereof. The arms 24 and 25 are spaced apart such a distance as to accommodate the usual coupling 5 link therebetween, said coupling link being indicated by 26. The arm 24 is provided with an elongated opening 27 therethrough adapted t0 accommodate the shank of the coupling pin C for movement in a direction lengthwise of the 10 car. The arm 25 is relatively thick, as Shown most clearly in Figures 3 and 4, and has a vertical opening 28 therethrough. The front wall of said opening is curved, as indicated at 29, to provide a fulcrum for rocking or pivotal move- 15 ment of the pin C. The rear wall of said opening, which is indicated by 30, is substantially at, as clearly shown in Figures 3 and 4. The portion of the arm 25 rearwardly of said opening 28 is of greater vertical height than the front 20 end of said arm and provides a shelf 3| on which the rear end of the coupling link 26 is supported. The bottom wall 22 of the housinglike support A is notched, as indicated at 32, to accommodate the lower end portion of the shank of the pin Cz 25 when said lower end portion is swung rearwardly to theposition shown in Figure 4.

y The buing head B has a vertically disposed, transverse front wall 33, presenting an outer bufng face, which cooperates with the buffer ,30 of an adjacent car. The bufling -head also has vertically disposed, spacedside walls 34-34 and spaced, horizontal top and bottom walls 35-'35 At the center of the head, the top and bottoni walls are connected by a rearwardly'extending, 35 ller section 35, which has a vertical opening 31 therethrough, adapted to accommodate the lower end portion of the shank of the coupling pin C. As most clearly shown in Figures 3 and `4, thev front and rear walls 38 and 39 of the opening 40 3l of the bufng head B present cam surfaces which cooperate with the shank of the coupling pin C.k The cam surface of the wall 38 is formed by a downwardly, rearwardly inclined, upper face 43, and a forwardly, downwardly inclined, lower 45 face 4l. Thecam surface 33 is formed by a forwardly and downwardly inclined upper face 42 and a downwardly and rearwardly inclined lower face 43. As shown most clearly in Figures 3 and 4, the faces 4| and 43 are of greater vertical length than the faces 40 and 42. The coupling pin C, which extends through the openings 21 of the arm 24, 28 of the arm 25, and 38 of the buing head B, also extends through the opening of the coupling link 26 and is headed .55

at its upper end, as indicated at 44. The head 44 is of such a size that it overlaps the side walls of the opening 21, thereby preventing downward movement of the pin C'. Y

The springs D-D, which are disposed at opposite sides of the mechanism, are arranged within the buifing head B and have their front and-rear housing or support A by means of retaining bolts ends bearing respectively on the inner side of the front wall 33;..of the buffing head B and.. on the front'face of the platelike section 20 `of the support A. Y f

The buiing head B is held assembled with the 45-4'5 extending through openings inthe topand bottom walls 2| and 22 (if,l thepsupportn'aiid Y crumed between Vits ends on said arm and having a coupling connection at the upper endthrough elongated openings 46-46 Yin the top and bottom walls 35-35 of the bufling head B.

The openings 46-46 are of sucha-lengthas topermit the necessary inward movement Qf the buiiing head in bo-th buff and draft. The inward movement of thebufling head is limited byengagement of the rear end thereof with the wall ofthe housing formed by the platelikel section 2-0 thereof. Y Y

YThe operation of my improved draft and buffing gear is as follows:` When a bufling force is applied to the bulng head B, the latter is forced inwardly against the resistance 4of the springs D-D, thereby absorbing the shock. During this action., the coupling. pinl C is carried rearwardly with the. bufiing head, and the coupling link 26 may move therewith. When the pulling force is applied in draft tothe coupling link 26, the upper end of the. pin C is pulled outwardly, therebycaus-` ing the pin torock on the curved fulcrum face 29Y ofthe arm 25 of the housing orsupport ,and

swinging the lower end portion of the shank of; the. pin C rearwardly, or inwardlyV toward the Vend of the car. This swinging movement of :the pi-nforces the buffing head Bv` rearwardly, o r. in-

wardly, from, the position showny in` Figure 3 to that Sho-wn in Figure 4, thereby compressing the j springs4 The draft forces appliedfto the coupling` una 26 arethus yieldingly resisted by f inwardzmoyement of the buflinghead. i

- I Vhave. herein shown anddescribedfwhat I now consider.,thegpreferred manner of carrying outmy intentioa'but the Same is, merely: illusnative; and I; @Qntemplate all Changes and modi.- iicatiens that come within @12569126 0f the-Claims? .appended hereto.;.lv f I-vclaim;` n 1- In a. combined drafind bulllns gear for cars, the combination with a support having'a verticalbackwall; ofanoutwardly projecting arm on saidY support; a bearing face on said support fixed to the endA ofthe car, said? structure-having a` fulcruin shoulder thereon; ofav bufng khead slidingly 'carriedKY by 'said supporting struct-ure; shock absorbing means opposing' inward movement of saidv head;fa lever'bar having one end .thereof rprovided with means for` coupling the same toY a coupling element of an adjacent car, said lever bar having the other'end thereof bearof the arm to actuatethe bufling head.

ing on said buing head,said lever being pivoted on said fulcrum shoulder to effect inward movement of said last named end of the lever whenl said first named end is pulled outwardly away f said support; an inwardly movable buding head "on said supportysaid head having an inwardly @extending portion thereof disposed below` said arm;V means on said support yieldingly opposing f inward movement of said head; and a lever fulthereof, the ,lower end of said lever engaging said inwardly extending portion of the head to Vforce vsaid head inwardly when the upper Vendy of. the lever is swungy outwardly in draft.

4. Ina combined draft andy builngV gear for cars, the combination with@ supporting member:` of an outwardly projecting arm on said, member, said arm, having a rearwardly facing fulcrum `shoulder thereon; a bufng head movable inward# ly on said member, said head having a rearwardly Y extending section thereof disposed below` said arm, -said section having a forwardly facing bearing surface thereon;y means yieldingly opposing inward movement of said head; anda lever pivoted between itsiends on said fulcrum shoulder of the arm and having its lower end engaged with said bearing surface` of the head, said lever receiving the pulling force in draft above thepivotal point of said lever.

5. In, a combined draft and bung gear for` n cars, the combinationwith a support of an outwardly, projecting arm on said support, Said arm having la vertical openingv therethrough; a coupling pinA extending through said opening and rockable on thewalls of said 'opening' to swing about its mid section; 'a bumng head sldable inwardly on said support, Vthe lower end of said pin engagin'gthe ,buiflng head to move the headpln- A wardly when the upper end of said piny is swung outwardly;` and means yieldingly opposing inward movement*of` said. head.

6; In aA combined draft` and bufling gear for cars, the combination with a support; of an outwardly' projecting arm on 'said support, saidarm having a coupling pin receiving opening therethrough,;'"a buing head slidable inwardly on saidlink andthe lower end thereof bearing on a wall ofthe opening of said head to force the head inwardly in draft action of the gear.l

7. In a combined" draft and buffing gearfor cars, the combination with a support; of; an out- Y wardly projecting arm on'said support; a buillngY head movable inwardly on'said support, said' head Vandv arm having-vertically aligned openingstherethrough; means j yieldingly` opposing inward movement of saidfhead; andv a lever for forcing said head inwardly in buf, said lever extending Y through the opening of, the arm into-the opening of said head, and vbeing rockable in saidopening 1 8. In a combined draft and builing gear for cars, the combination with a support; of an arm on said support, said arm having a vertical opening therethrough; a bufiing head movable inwardly toward the end of the carin bui, said head having a vertical opening therethrough; yielding means opposing inward movement of said head; and an upright lever extending through said openings, said lever being pivoted in the opening of said arm and having camming engagement below the pivot point thereof with a Wall of the opening of said buing head to force the head inwardlytoward the end of the car upon the lever being swung outwardly in draft.

9. In a combined draft and bufng gear for cars, the combination with a support; of a bufng head movable inwardly on said support, said head having a rearward extension provided with a vertical opening therethrough; spring means opposing inward movement of said head; an outwardly extending arm on said support above said extension of said head; a second outwardly extending arm on said support above said first named arm, said arms having vertically aligned openings therethrough, said arms being spaced apart vertically to receive a coupling link therebetween; and a coupling pin headed at the upper end and having the shank thereof extending through the openings of said arms and said extensions, said pin rocking in the opening of said rst named arm and engaging the rear Wall of the opening of the bumng head to force the buing head inwardly when a pulling force is applied to said pin.

STACY B. HASELTINE. 

